Drill rigs



July 27, 1965 c. o. L. OTTOSSON ETAL 3,196,957

DRILL RIGS,

Filed May 3, 1962 3 Sheets-Sheet 1 W/ WT July 27, 1965 C. O. L. OTTOSSONETAL DRILL RIGS 3 Sheets-Sheet 2 Filed May 3, 1962 July 27,' 1965 c. o.L. oT'rossoN ETAL 3,

7 DRILL RIG'S Filed May 3, 1962 3 Sheets-Sheet 3 United States PatentDREL RIGS Carl Gtto Lennart Ottosson, Farsta, Karl-Erik Ovarnstriim,Vendelso, and Karl Magnus Hiillherg, Nacka, Sweden, assignors to AtlasCopco Alrtieholag, Nacka,

Sweden, a corporation of Sweden Filed May 3, 1962, Ser. No. 192,186 11Claims. (Cl. 173-34) This invention relates generally to rock drill rigsand more particularly to a drill rig for percussive drilling of longholes with extension drill steel equipment intended for driving raisesand extending the full length of the raise to be driven.

One primary object of the invention is to provide a drill rig forpercussive drilling of groups of. long holes for driving raises whichsafeguards a strictly parallel positioning of a drilling machine fordrilling the different long holes according to a predetermined drillingpattern.

Another object of the invention is to provide a drill rig of theaforementioned character which effectively covers the full area to beprovided with holes according to the drilling pattern.

Another object of the invention is to provide a drill rig of theaforementioned character which features mechanical positioning of thedrilling machine in the various positions according to the drillingpattern.

Another object of the invention is to provide a drill rig of theaforementioned character having adjusting means for selecting thecorrect inclination of the axis of the drill rig prior to commencing thedrilling of the various holes in order to drive the raise in thepredetermined direction.

The above and other objects of the invention will become obvious fromthe following description and from the accompanying drawings in which anembodiment of the invention is illustrated by way of example. It shouldbe understood that this embodiment is only illustrative of the inventionand that various modifications may .be made within the scope of theclaims without departing from the scope of the invention.

In the drawings "FIG. 1 shows a side view of a drill rig according tothe invention and with the outer frame section turned into the centralplane of the inner frame section. FIG. 2 is a view on line 22 in FIG. 1.FIG. 3 is an enlarged view on line 33 in FIG. 1 with the outer framesection turned inward. FIG. 4 is an enlarged side view. and partialsection on line 4-4 in FIG. 1. FIG. 5 is an enlarged view and partialsection on line 55 in FIG. 1. FIG. 6 is a sectional enlarged view online -6 in FIG. 1. FIG. 7 is a view and partial section on line 7--7 inFIG. 1. FIG. 8 is a sectional view on line 88 in FIG. 7. FIG. 9 is asectional view on line 99 in FIG. 7. FIG. 10 is a sectional view on line1il10 in FIG. 8, and FIG. 11 is a view corresponding to FIG. 7 butshowing the power jack therein turned through 90 The drill rigillustrated in the drawings consists of an articulated frame composed ofan inner frame section 20 and outer frame section 21. The inner framesection 20 is composed of a central body member 22 carrying at itsopposed end shafts 23. Firmly secured to the shafts 23 and bolted to thecentral body member 22 are end frames 24- carrying coaxial widely spacedapart pairs of strictly parallel bearings 25 and 25 at their inner andouter ends. The outer frame 21 carries opposed coaxially disposedtrunnions 26 and is mounted with said trunnions 26 pivotally between andon said outer bearings 25 A pivot 27 is provided on a bracket 23 on theinner portion of the outer frame section 21. A rearwardly pointingbracket arm 29 is fixedly connected 3,196,957 Patented July 27, 1965 t0the central portion of the body member 22 and carries a pivot 30. To thepivots 2'7 and 30 there is pivotally joined a power jack, preferably adouble acting hydraulic power jack 31. By manipulating the power jack 31the outer frame section 21 may be swung one way or the other on thetrunnions 26 relative to the inner frame section 20.

On the outer end ofthe outer frame section 21 there are provided spacedapart plane connecting surfaces 32 provided with centering grooves 33extending in strict parallelism with the axis of the trunnions 26.Against the grooves 33 and surfaces 32 are bolted by means of bolts 35cooperating guidesllii and plane surfaces 34- on a guide frame 36 whichis brought into parallel position relative to the trunnions 26 by meansof the grooves 33 and guides 31 Reciproca-bly arranged on guide members37 along said guide frame 36 is a feed bar 38 for a drill 39. A powercylinder 40 is pivotally connected at one end 93 to the guide frame 36and at the outer end 42 to the feed bar 38 and serves to move the feedbar 38 longitudinally of itself relative to the guide frame as. 43indicates diagrammatically a'drill feed motor which for exarnple over afeed screw 44 or in other ways serves .to feed the drill 39 togetherwith an extension drill steel equipment 43 towards a rock face. Thedrill 39, which preferably is a pneumatically driven percussive drill,is guided for reciprocation on the feed bar 38 along suitable guideways46 for example formed by pairs of elongated steel bars bolted to thefeed bar 38 and also forming guide ways 47, which extend oppositely tothe guide ways 46 the length of the fed bar 38 and are intended forcooperation with the guide members 37 fixedly carried by the elongatedguide frame 36 for making reciprocation of the feed bar 38 with respectto the guide frame 36 possible. The feed bar 38 may carry at its forwardend a spur 49 and a suitable power operated drill steel guide 5%} forguiding the drill steel 48. The details of the drill, the extensiondrill steel equipment, the feed bar, the feed motor, and the drill steelguide are not illustrated in detail since they may be carried out in anyconventional manner suitable for the drilling of long holes andwell-known to those familiar with the art.

Rotat-ably journalled and reciprocally arranged in the upper bearing 25of the inner frame section if? there is an upper column section 51 whichis provided with a pivot 52 at its inner end and carries the convexmember of a ball joint 53, FIG. 6, at its outer end. The ball jointmember 53 is provided on a sleeve 54 which is slidably retained on thecolumn section 51 by means of a transverse pin 55 extending therethroughand through axial slots 57 on the sleeve 54. Between the column section51 and the sleeve 54 there is provided a series of axially groupedEelleville springs 56. Rotatably journalled in the lower bearing 25 ofthe inner frame section 2! is a lower column section 53 carrying a pivot59 at its inner end and being provided with the concave portion 61 of anaxial ball joint, FIG. 8. Between the pivots 52 and 59 of the columnsections 51 and 58 there is provided a preferably hydraulically actuateddouble acting power jack 61. By manipulating the power jack 61 the uppercolumn section 51 may be extended axially outward through the upperbearing 25.

The lower column section 58 is provided with a radially protruding arm62, FIG. 8, carrying at its end a pivot 63 extending in parallel andspaced apart reiation with respect to the axis of the column section 58.A radially protruding arm s4, FIG. 9, is also provided on the lowermostportion of the lower bearing 25, the arm 64 carrying a pivot 65 also inparallel and spaced apart relation with respect .to the axis of thecolumn section 58. Links 66 are connected to the pivots 63, 65 and V oare also joined to pivots 68 at the opposed portion of a yoke 67. Theyoke 67 forms the inner end of the cylinder portion of a hydraulicallyactuated double-acting power jack 69. The stem end 70 of the power jack69 is rotatably arran ed and journalled on the lower column section 68and extends in a common central plane to.- gether with the links 66 andthe pivots 65, 63. The stem end '70 is also interposed between an axialshoulder 71 on the column section 58 and the lower. bearing 25 of theinner frame section 29. 'As will be described in greater detail furtheron the arm 64 may, by extending or contracting the power jack 69, beturned one way or the other with respect to the arm 62 i.e. the innerfirarne section 20 may be swung with respect to the column sections 51,58. For the fixation ofthe arm 62 there is provided a radially extendingbolt 72 which is threadedly received in an car 73 and the axis of whichpoints through the center of the radius defining the concave ball jointportion 60. The inner end of the bolt 72 is for strengthening purposesreceived in a bore 74 adjacent the ball joint member 60.

For supporting the drill rig there are provided ground supportedmounting means comprising upper and lower rock engaging members 75, 76.The upper rock engaging member 75 consists of a quadrangular plateprovided with diagonally extending T-grooves 77 along which lock bolts78 are slidably arranged. The plate'75 may be bolted to the drift roofby means of conventional expansion bolts 79, not shown in detail.Resting against the plate 75 is a concave ball joint portion intendedfor cooperation with the ball joint member 53. The ball joint portion8t) is formed quadrangular and may be locked by means of the lock bolts78 and angular lock pieces 81in any suitable transverselyadjustedposition on the plate 75.

The lower rock engaging member 76 may be firmly affixed to a suitablesteel plate 82 by means of bolts, not shown, which steel plate 82 may beaffixed to the floor of the drift for example by pouring concrete on thefloor for purposes of embedding the steel plate 82. The rock engagingmember 7 6 proper is analogous in construction with the upper rockengaging member 75 and carries identical lock bolts and lock pieces andalso a quadrangular footplate 83 which by means of the lock bolts may beadjusted transversely in any suitable position on the lower rockengaging member '76; The footplate 83 carries centrally thereon anupwardly protruding convex ball joint member. 84 intended forcooperation with the concave ball joint portion 66 of the lower columnsection 58. The footplate 83 also carries a U-shaped yoke provided withopposed grooves 86 and 87 intended for'cooporation with the radiallyextending bolt 72 on the lowermost portion of the column section 58. Thearrangement is such that the bolt 72, by turning the column sections 51,58 on the axis defined by the balljoints 84, 60 and 53, 80, may beselectively coupled with the groove '86 or 87, respectively, therebyfirmly joining the column sections to the surrounding rock in twoalternative positions offset angularly by 180 degrees.

The pressure fluid for operation of the different power cylinders, thefeed motor, the drill steel guide and the drill of the illustrated drillrig is supplied from suitable sources not illustrated and the varioushoses for conveying pressure fluid have been omitted since they wouldmake the drawing rather congested and since the provision of such hosesor conduits is obvious to those skilled in the art.

In FIGS. 1 and 2 the drill rig is illustrated in position for drillingholes vertically downwards. Due to the parallel arrangement of thetrunnions 26 and the axis of the drill steel equipment 48 it is obviousthat swinging of the outer frame 21 in clockwise direction as viewed inFIG. 2 by means of the power jack 31 moves the drill steel parallel toitself sideways on the axis or". the -trun-' nions 26 along an arc of acircle. This enablesthe operator to drill a number of strictly parallelholes be- -1- tween the full line position of FIG. 2 and the position 90illustrated by dotted lines in FIG. 2. Additionally the operator may, bymanipulating the power jack 69, turn the entire articulated support 20,21 with the axis of the drill steel parallel to itself and parallel tothe axis of the column sections 51, 58 from the full line position ofFIG. 2 over the intermediate position 91, illustrated by dotted lines inFlu. 2, to any selected position within reach around the axis of thecolumn sections 51, 58. To explain this in greater detail, let it beassumed that the power jack 6'9 occupies the position of FIG. 7 and thatthe radial bolt 72 of the column section 58 is inserted in the groove 86of the U-shaped yoke 85 on the footplate 83. By contracting the powerjack 69 the operator forces the power jack 69 to rotate in clockwisedirection turning one link 66 on the stationary pivot 63 and forcing bythe other link 6-2? the pivot to move in a clockwise direction. Themovement of the pivot 65 causes via the arm 64' and thelower bearing 25a corresponding turning movement of the entire articulated support onthe axis of the column sections 58 and 51. Such turning movement may becontinued until the power jack 69 reaches the position of FIG.11, whichis 90 degrees ofiset wit-h respect to FIG. 7 and in which position thearm 64 has received an an ular displacement of about 180 degrees. If theoperator wishes to continue the turning movement over the remaining 180degrees of a full circle, the'may contract the power cylinder on theelongated guide frame member 36 in order to bring the spur 49 of thefeed bar 38 in contact with the floor of the drift thereby preventingthe articulated support '20, 21 from turning. Thereupon the bolt 72 isremoved from the column section 53. By extending the power jack '69,FIG. 11, it is now possible to rotate the, column sections 51, 58 on theball joints 53, 80 and 84, 60 since during such extension the pivot 65now is kept stationary by the spur 49 While the pivot 63 isturned in aclockwise direction 180 degrees until the arm 62 is brought in aposition over the groove 87 in FIG. 11. The bolt 72 may now bereinserted and'brought into engagement with the groove 87, whereuponafter C1Vc.' tion of the spur from the ground the operator is able tocontinue turnin of the articulated support the remaining 180 degrees ofa' full circle by again contracting the power jack 69. Thus it isreadily seen that the operator is able to position the drill steel instrict parallelism with the axis of the column sections in any seiectedposition according to the drilling pattern between the full lineposition and the dotted line position 90 of FIG. 2 through an angle of360 degrees and to keep the steel in any such position by means of thepower jacks 69 and 31.

By removal of the bolts 35 it is obviously possible to remove theelongated guide frame 36 together with the entire drilling apparatus andto reposition the guide frame 36 on the surfaces 32 with the drillpointing in upward direction for drilling of long holes upwardly.

In order to mount the drill rig in a selected position the steel plate82 is firstly attached to the floor of the drift at a suitable locationand firmly connected thereto by pouring concrete around the plate 82.Thereupon the rock engaging member 76 is bolted to the steel plate 82.Taking into account the inclination of the raise to be driven, the rockengaging member is bolted to the roof of the drift by means of theexpansion bolts 79 in approximately the correct inclination with respectto the rock engaging member 76. Thereupon the footplate 83 on the rockengaging member 76 and the ball joint portion 80 on the rock engagingmember 75 are adjusted by means of the lock bolts 78 and the angularlock pieces 81 with respect to each other in a position defining an axisof the ball joint members 80, 84 strictly equal to the inclination ofthe raise to be driven. The articulated frame 20, 21 is then raised withthe lower column section 58 resting with its concave ball joint portion60 against the ball joint member 84 of the footplate 83. By

expanding the power jack 61 connected to the column sections 58 and 51the ball joint member 53 of the column section 51 is brought firmly incontact with the concave ball joint portion 8-0 simultaneouslycompressing the Belleville springs 56 for giving the column sections anadditional axial precompression. The articulated frame is now turned sothat the arm 62 of the lower column section 53 is brought over one ofthe recesses 86 or 87, for example 87, whereupon the bolt 72 is screwedinto the ear 73 of the arm 62 thereby coupling the column section 53 tothe footplate 83. Finally the elongated guide frame member 35 is boltedby means of the bolt 35 to the surfaces 32 of the outer frame section 21with the drill pointing in the direction of the raise to be driven, forexample downwardly, whereupon the drill rig after connection to therespective power sources is ready for operation.

The embodiment of the invention above described and illustrated in thedrawings should only be considered as an example and the invention maybe modified in several different ways within the scope of the followingclaims.

What we claim is:

1. In apparatus of the character described for movably supporting adrill rig frame with a drill disposed thereon in a plurality ofpositions, the combination which comprises a substantially verticallydisposed pressure fluid operated extensible and retractible power jackhaving pivots on each end thereof, a column section extending from eachend of said power jack and connected to the said pivots and forming withsaid power jack a supporting column for said drill rig frame, a surfaceengaging member disposed on each of said column sections at the endthereof opposite said pivots for engaging respectively opposing surfacesof the place where the said drill rig frame is to be supported, bearingmembers rotatably disposed respectively on each said column sections forengaging said drill rig frame, one of said column sections being axiallyslidable in its respective bearing for providing extending orcontracting movement of said supporting column for the engagement ordisengagement of said surface engaging members, and means connected toone of said column sections and its respective bearing for selectivelymoving a drill rig frame disposed thereon in different angular positionswith respect to said supporting column.

2. Apparatus as recited in claim 1 in which spring means are disposedbetween one of said column sections and its respective surface engagingmember for providing rial compressibility to said supporting column.

3. Apparatus as recited in claim 1 and which includes a ball jointbetween each said surface engaging member and the adjacent said columnsection with said ball joints defining a turning axis for said columnsection, T-groove and lock nut means disposed around said ball jointsfor adjusting said column sections on the said adjacent surface engagingmembers in directions transverse to said column sections, means forselectively intercoupling one of said column sections and one of saidsurface engaging members in ditferent angularly offset positions aroundsaid turning axis defined by said ball joints, and in which said movingmeans is a second pressure fluid operated extensible and retractiblepower jack.

4. In apparatus of the character described for positioning andsupporting a drilling apparatus in a plurality of drilling positions allparallel to each other and having a ground supported mounting means, thecombination which comprises coaxial spaced apart pivot providingelements disposed on the said mounting means and defining a first axis,an articulated frame including a first and second section with the innerend portion of said first section disposed on said pivot-providingelements for providing swinging movement of said frame on the said firstaxis, spaced apart pivotally connected means between the outer endportion of said first and the inner end portion of said second framesection for swinging movement therebetween on a second axis parallelwith said first axis, elongated feeding means slidably disposed on saidsecond frame section at the end thereof opposite said second axis, theaxis thereof being parallel to said first and second axes, a firsthydraulic power jack between said frame sections for swinging andangularly positioning said second frame section with respect to saidfirst frame section, a second hydraulic power jack between said mountingmeans and said first frame section for swinging and angularlypositioning said articulated frame with respect to said mounting means,and a third hydraulic jack between said second frame section and saidfeeding means for the movement thereof along said second frame sectionin a direction parallel to said first and second axes.

5. In apparatus of the character described for simultaneously supportingand moving a drill rig through a plurality of selective drillingpositions all parallel to each other and to a single supporting columnfrom which said apparatus depends and having a supporting column withsurface engaging members at opposite ends thereof and extending meansfor clamping said column and said members between opposed surfaces, thecombination which comprises a first pair of spaced apart coaxial pivotsdisposed on said column and parallel therewith, an articulated framewith first and second sections disposed on said pivots for swingingmovement of said frame on said column, a second pair of spaced apartcoaxial pivots disposed on said frame between said first and secondsections and parallel with said first pair of pivots for providingswinging movement between said first and second sections of said frame,an elongated feed bar slidably disposed on said second section on theend thereof opposite said second pair of pivots with the slidingmovement of said feed bar being parallel to the axes of said first andsecond pair of pivots and said column and defining therefor a drill axisfor a drill disposed thereon parallel to said supporting column, a firsthydraulic power jack between said frame sections for swinging andangularly positioning said second frame section relative to said firstframe section, a second hydraulic power jack between said column andsaid first frame section for swinging and angularly positioning saidarticulated frame with respect to said supporting column, spur means onthe forward end of said feed bar, a third hydraulic power jack betweensaid second frame section and said feed bar for the sliding movementthereof whereby said spur means are moved respectively into and out ofengagement with the rock face to be drilled, and said articulatedsupport and spur means forming the sole support for said feed bar insaid plurality of said drilling positions during the drilling operation.

6. Apparatus as recited in claim 5 in which said surface engagingmembers are turnably arranged on the opposite ends of said column andmeans are provided for selectively intercoupling said column and one ofsaid surface engaging members in different angularly offset positionsaround said column.

7. Apparatus as recited in claim 5 in which T-groove and lock-nut meansare provided between the ends of the sald supporting column and the saidadjacent surface engaging members for adjusting the said column on thead acent surface engaging members in directions transverse to the saidsupporting column.

8. Apparatus as recited in claim 5 which also includes a ball jointbetween each said surface engaging member and the adjacent end of saidsupporting column with said ball joints defining a turning axis for thesaid supporting column, and means for selectively intercoupling saidcolumn and one of said surface engaging members in different angularlyoffset positions around said turning axis defined by said ball joints.

9. In apparatus of the character described for simultaneously supportingand moving a drill rig through a plurality of selected drillingpositions all parallel to each other and to a single supporting columnfrom which said apparatus depends and having a supporting column withsurface engaging members at opposite ends thereof and extending meansfor clamping said column and said members between opposed surfaces, thecombination which comprises a first pair of spaced apart coaxial pivotsdisposed on said column and parallel therewith a composite frame ofclosed generally quadrangular shape including opposed parallel girdersrigidly afiixed thereto and disposed on said pivots for swingingmovement of said frame on said column, an elongated feed bar slidablydisposed on said frame on the end thereof opposite said pair ofpivotswith the sliding movement of said feed bar being parallel to theaxis of said pivots and said column and defining therefor a drill axisfor a drill disposed thereon parallel to said supporting column, a firsthydraulic power jack between said column and said frame for swinging andangularly positioning said frame with respect to said supporting column,spur means at the forward end of said feed bar, a second hydraulic powerjack between said frame and said feed bar for the sliding movementthereof toward and away from the surface to be drilled whereby said spurmeans is moved into and out of engagement with the said surface to bedrilled, said supporting column and said spur means forming the solesupport of said feed bar in said plurality of drilling positions duringthe drilling operation, a

10. Apparatus as recited in claim 9 which includes a ball joint betweeneach said surface engaging member at the adjacent end of the saidsupporting column with the said ball joint defining a turning axis forthe said supporting column, T-groove and lock-nut means disposed aroundsaid ball joints for adjusting said supporting column on the adjacentsurface engaging members in directions transverse to the said supportingcolumn.

11. In apparatus of the character described for simultaneouslysupporting andmoving a drill'rig through av plurality of selectivedrilling positions all parallel to each other and to a single supportingcolumn from which said apparatus depends, the combination whichcomprises a substantially vertically disposed pressure fluid operatedextensible and contractible power jack having pivots on each endthereof, a column section extending from each 7 $3 posed respectively oneach of said column sections for engaging said drill rig, one of saidcolumn sections being axially slidable in its respective pivot forproviding extending or contracting movement of said supporting columnfor the engagement or disengagement of said surface engaging members, anarticulated frame with first and second sections disposed on said pivotsfor swinging movement of said frame on said supporting column, a secondpair of spaced apart coaxial pivots disposed on said frame between saidfirst and second sections and parallel with said first pair of pivotsfor providing swinging movement between said first and second sectionsoi said frame, an elongated feed bar slidably disposed on said secondsection on the end thereof opposite said second pair of pivots with thesliding movement of said feed bar being parallel to the axes of saidfirst and sec ond pair of pivots and said supporting column and definingtherefor a drill axis for a drill disposed thereon parallel to saidsupporting column, a second pressure fluid operated extensible andcontractible power jack connected to'one of said column sections and itsrespective .pivot for selectively moving the frame disposed thereon indifferent angular positions with respect to said supporting column, athird pressure fluid operated extensible and contractible power jackbetween said frame sections for swinging and angularly positioning saidsecond frame section with respect to said first frame section, spurmeans at the forward end of said feed bar, a fourth pressure fiuidoperated extensible and contractible power jack between said secondframe section and said feed bar for the sliding movement of said feedbar on said second frame section whereby said spur means are movedrespectively into and out of engagement with a surface to be drilled,and said articulated frame and spur means forming the sole support forthe said feed bar in the said plurality of V drilling positions duringthe drilling operation.

References Cited by the Examiner UNITED STATES PATENTS 1,026,295 5/12Arndt et al. 173-35 2,274,728 3/42 Osgood 17334 2,586,924 2/52 Dosrnondl7335 3,021,099 2/62 Samhammer et al. 248-l6 3,057,416 10/62 Carlson etal. l73-34 3,061,023 10/62 Samhammer et a1. 173-43 BROUGHTON G. DURHAM,Primary Examiner.

4. IN APPARATUS OF THE CHARACTER DESCRIBED FOR POSITIONING ANDSUPPORTING A DRILLING APPARATUS IN A PLURALITY OF DRILLING POSITIONS ALLPARALLEL TO EACH OTHER AND HAVING A GROUND SUPPORTED MOUNTING MEANS, THECOMBINATION WHICH COMPRISES COAXIAL SPACED APART PIVOT PROVIDINGELEMENTS DISPOSED ON THE SAID MOUNTING MEANS AND DEFINING A FIRST AXIS,AN ARTICULATED FRAME INCLUDING A FIRST AND SECOND SECTION WITH THE INNEREND PORTION OF SAID FIRST SECTION DISPOSED ON SAID PIVOT-PROVIDINGELEMENT FOR PROVIDING SWINGING MOVEMENT OF SAID FRAME ON THE SAID FIRSTAXIS, SPACED APART PIVOTALLY CONNECTED MEANS BETWEEN THE OUTER ENDPORTION OF SAID FIRST AND THE INNER END PORTION OF SAID SECOND FRAMESECTION FOR SWINGING MOVEMENT THEREBETWEEN ON A SECOND AXIS PARALLELWITH SAID FIRST AXIS, ELONGATED FEEDING MEANS SLIDABLY DISPOSED ON SAIDSECOND FRAME SECTION AT THE END THEREOF OPPOSITE SAID SECOND AXIS, THEAXIS THEREOF BEING PARALLEL TO SAID FIRST AND SEC-